NIL HEARDRECEPTION LOG

T-Marker

tier B · mixed

4325 kHz USB · 2026-09-18 21:07:37Z · 04:00 · received at Sedlcany, Czech Republic

Spectrogram of T-Marker, 4325 kHz USB, 2026-09-18 21:07:37Z, 04:00: mixed 92% · keyed-tone 8% · tone 2449 Hz · keying 0.60 Hz depth 0.89
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone mixed
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 4.4 MB ⤓ Opus 989 kB { }
What was heard
mixed 92% · keyed-tone 8% · tone 2449 Hz · keying 0.60 Hz depth 0.89 — dominant tone 2449 Hz, keyed at 0.6 Hz (depth 0.89). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Sedlcany, Czech Republic (JN79GO) · LW 40m · reported SNR 38 dB — thanks to the operator. Receivers
Provenance
sha256 96ebfb5082cdcd18904e57e2f4829a4352a0d55b779b3d0a5a1f2d8b44807791
source 04:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-18T2107Z-4325-tmarker-4325
Heard in the record
— linked once the record exists.
Notes

rig: Marker hunt 2026-09-18 ~21:08Z. priyom: active, round the clock on 4325 USB, intermittent tone dashes like Morse T, pattern lengthened 2024-04-22. Western/Leningrad MD TX. Source: https://priyom.org/military-stations/russia/t-marker

Licence
CC BY 4.0 — credit NIL HEARD / Reception Log. The recording is ours; the transmission is somebody else's. Descriptions describe sound, never content — why.
Related